What factor is a major obstacle to utilizing a bi-directional minimum operating surface?

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Multiple Choice

What factor is a major obstacle to utilizing a bi-directional minimum operating surface?

Bi-directional minimum operating surface relies on having reliable navigation guidance for approaches and departures from both ends of the runway. The main hurdle is the need for two complete sets of major navigational aids (NAVAIDs) so each direction has its own robust guidance and procedures. Without independent NAVAIDs for both ends, precision and integrity of navigation cannot be guaranteed for operations in the opposite direction, making bi-directional use impractical. Wind direction, elevation differences, and the need for specific takeoff maneuvers are operational considerations, but they do not constitute the fundamental barrier to enabling a bi-directional MOS like having two full NAVAID systems does.

Bi-directional minimum operating surface relies on having reliable navigation guidance for approaches and departures from both ends of the runway. The main hurdle is the need for two complete sets of major navigational aids (NAVAIDs) so each direction has its own robust guidance and procedures. Without independent NAVAIDs for both ends, precision and integrity of navigation cannot be guaranteed for operations in the opposite direction, making bi-directional use impractical.

Wind direction, elevation differences, and the need for specific takeoff maneuvers are operational considerations, but they do not constitute the fundamental barrier to enabling a bi-directional MOS like having two full NAVAID systems does.

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